Migrtation from ISPConfig3(apache) to ISPConfig3 (nginx)

What are the necessary files to backup and restore if one needs to migrate from the server with ISPConfig3 with Apache2 and powerDNS to another new server freshly installed with ISPConfig3 (nginx) and BIND9?

What are the necessary files to backup and restore if one needs to migrate from the server with ISPConfig3 with Apache2 and powerDNS to another new server freshly installed with ISPConfig3 (nginx) and BIND9?

The old server is running Debian Squeeze and the new one Debian Wheezy. Thanks!

PS: Posted this to wrong section earlier. Sorry!

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Well man you raeally hit an IMPOSSIBLE there's no way to do that unless you're an Apache NGINX and ISPconfig expert which we none are, except for falko and till, but I guess it's po$$ible if ypu know what I mean.

I've been looking into that topic too, but have mpt found any related info and I don't normally like to post in fora as I've get put down and creamed at.